Burner



July 3, 1934. HDODGE 1,964,872

BURNER Filed Sept. 4, 1929 2 Sheets-Sheet l INVENTOR flurry b. Dodge BY 47 a r 4 74 A? ATTORNEYS y 1 93 H. H. DODGE 1,964,872

' BURNER Filed Sept. 4, 1929 2 Sheets-Sheet 2 9* ATTQRNEYS Patented July 3, 1934 UNITED STATES PATENT OFFICE A N. Y.', a partnership consisting of Ramsay Hoguet, John F. Neary, and Daniel L. Morris Application September 4, 1929, Serial No. 390,362

Claims. (Cl. 15 8104) This invention relates to gas burners and more particularly to those used with heating units which have a considerable portion of the heating surface directly above the burners.

An object of the invention is to direct a column of flame from a gas burner and confine it by means of air curtains which also help to insure complete combustion of the gaseous fuel.

v A feature of the invention resides in a combustible mixture distributing head comprising bafiles which deflect a stream of air toward both sides of the flame thereby tending to confine it in the'shape of a column and carry it up toward the surface to be heated, and at the same time provide sufficient air to insure complete combustion.

A better understanding of the invention may be had by referring to the following description together with the accompanying drawings of which Fig.1 is a plan view of a group of six burner heads,- with portions of several heads brokenaway to show the burner head support.

Fig. 2 is a section on line 2- 2 of Fig. 1.

Fig. 3 is a section through a combustible mixture distributing chamber of one of the burners as at 3-3 of Fig. 1 showing the gas flow, and

Fig. 4 is a section through an air distributing chamber as at 4-4 of Fig. 1; showing the flow of air therethrough.

Referring to the drawings, six burner heads are shown which are adapted to be located in the fire-box of any hot-air, water or steam boiler. The burner heads are installed in pairs, 1 and 2 each being supported by burner arms 3 and 4, each burner head in turn accommodating two burners such as 5 and 6. Each burner head has two long and relatively shallow rectagular chambers '7 and 8, one of which supplies the combustible mixture to the burners while the other sup- 0 plies air thereto. The first chamber '7 will be termed a combustible mixture distributing chamber while the latter 8 will be termed an air distributing chamber. Each combustible mixture distributing chamber communii cates with a pair of burners (Fig. 3) through slots 9 in a cover plate 10, which is fastened to the body portion by some suitable means as for instance screws 11. The cover plate has a plurality of walled chambers 12 on the top of which are burner tips comprised of blocks 13 which are suitably secured to the walls by means of screws. The blocks 13 form long narrow slots 14 which establish communication from the chamber '7 to the atmosphere throughthe passages 12. The slots 14 are relatively deep rather than relatively shallow so that upon lighting and extinguishing the flame will not extend back into the chamber 7 to cause an explosion, which would presumably occur because of the confining of the combustible mixture within the chamber '7 The chambers 12 are tapered to increase the velocity of flow from the chamber '7 to the burner tips, and are baffled as at 15 to insure an even distribution of the flame above the burner.

Fig. 4 shows a section through the air distributing chamber 8 and the passages in the cover plate through which the air reaches the atmosphere. These passages 16 are formed of the walls in the cover plate and the block 13 of the burner tip and a baflle 17 which is the same width as the burner, and which deflects slightly inward toward the burner slots. These bafiles are fastened to the burner tips by some suitable means, as for instance thescrews 18, and are spaced therefrom a suitable distance by spacers 19. Thus each burner comprises a pair of slotted tips from which the gaseous mixture flows-which when lighted produces a long thin flame extending upwardly from the burner and air passages at the sides of the tips from which air flows to produce air curtains which confine the flames the shape of columns and insures complete combustion. 'The body portion of the burner .head which includes the combustible mixture distributing chambers and the air distributing chambers is supported on burner seats 20 which are preferably cast integrally with supporting arms 3 and 4. These seats run lengthwise of the burner arms as shown except in the case of end sections where the seats are cast at an angle with the supporting arms for reasons which will be hereafter set forth. The underside of the body member has a raised portion 21 which has a shape simulating that of the seat upon which it rests. Each seat is equipped with slots 22 and 23 which communicate respectively with the gas and air ducts 24 and 25 respectively in the supporting arms. Communication between these slots and the combustible mixture distributing chamber and the air distributing chamber is made through holes 26 and 27 (Figs. 3 and 4:) which register with the slots in the burner seats.

Between the gas and air slots is another slot 28 which extends through the burner seat and through which a screw 29 extends into the body T portion between the air and the combustible mixture distributing chambers. This slot provides for an adjustment of the burners to accommodate boilers of different sizes. For instance, the middle burners may be moved longitudinally with ioo iio

respect to the supporting arms whereas the end sections may be moved longitudinally and laterally on account of the angle (Fig. 1) at which the burner seat is cast on the supporting arm.

The burner heads are in turn mounted in pairs which are supported by arms comprising the gas ducts 24 and the air ducts 25 shown in Fig. 2. Suitable means are provided for supplying a combustible mixture and air to these ducts. All of the burner heads are identical with the exception of the difference in the angle at which the end burner seats are cast with respect to the burner arms, the purpose of which has been heretofore described.

In operation a combustible mixture passes from the supply ducts 24 through the slot 22, the aperture 26 to the combustible mixing chamber 7, and from thence to the respective burner tips associated therewith from which it burns in the form of a, flame. Air from the supply duct 25, passes through the slot 27 to the air distributing chamber 8, from which it passes through the passages 16 at the sides of the burner tips. Upon reaching the top face of the burner tips, itis deflected inwardly toward the flames forming a curtain at the sides thereof conforming the flames into a column extending upwardly toward the boiler heating surface directly above the burners.

Although the invention has been described with reference to a particular type of burner, it is not to be limited thereto, nor to the particular numher and arrangement of burners shown, but only by the prior art and the scope of the appended claims.

What is claimed is:

1. In a gas burner, a plurality of tips arranged adjacent to each other having slots therein, means for forcing a combustible mixture through said slots to the atmosphere to burn in a flame, air passages on the outer sides of said tips and bafiling means arranged adjacent each other converging toward said tips and toward each other for confining the air from said passages closely to the sides of said flames to form air curtains.

2. In a gas burner a plurality of burner heads said heads each comprising a plurality of burner tips arranged adjacent to each other, means for burning a flame from said tips, air openings on the sides of said tips, means for supplying said air openings with air under pressure, and means on opposite sides of each burner tip associated with said openings to cause the air therefrom to conform said flames into columns extending upwardly.

3. In a burner a plurality of burner heads, said heads each comprising a plurality of burner tips having slots therein, said burner tips being arranged in pairs, means for forcing a combustible mixture through said slots to the atmosphere to burn in a flame, means comprising a plurality of air passages associated with each pair of tips,'means for supplying said air passages with air under pressure, and bafiling means converging toward said tips to cause the air from said passages to conform the flame from said tips into columns extending upwardly.

4. In a, burner, the combination with a body portion comprising a combustible mixture distributing chamber and an air distributing chamber, of a plurality of burner tips having slots therein arranged in pairs, means comprising passages for forcing a gas from said distributing chamber through said slots tothe atmosphere to burn in a flame with greater velocity than it flows through said distributing chamber, passages on the opposite sides of each burner tip for conducting the air under pressure from said air distributing chamber to the atmosphere and means converging toward the outlets of said slots to form air curtains confining said flames.

5. In a burner, the combination with a body portion comprising a combustible mixture distributing chamber and an air distributing chamber, and means for supplying gas and air to the respective chambers under pressure, of a plurality of pairs of burner tips, slots in said tips, means comprising passages for forcing gas from said distributing chamber through said slots to the atmosphere with greater velocity than it flows through said distributing chamber to burn in a flame, passages associated with said burner pairs for conducting air under pressure from said air distributing chamber to the atmosphere and bafiiing means associated with said passages to cause the air therefrom to conform the flames from said burner tips into columns.

HARRY H. DODGE. 

